The Polonovski–Potier Reaction of Berbine N-Oxides. Synthesis of 8-Hydroxymethyl and 8-Methylberbines
作者:Rafael Suau、Francisco Nájera、Rodrigo Rico
DOI:10.1016/s0040-4020(00)00945-5
日期:2000.12
The Polonovski–Potier reaction of trans and cis berbines N-oxides was studied. The 8-cyano derivative obtained from transN-oxides were used to synthesize 8-hydroxymethyl and 8-methyl berbines. This procedure was applied to the stereocontroled synthesis of (8R, 14S)-(−)-8-methylcanadine from (14S)-(−)-canadine.